CRYSVITA vs RAYALDEE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Possible drug interaction. CRYSVITA and RAYALDEE are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	CRYSVITA	RAYALDEE
Rating	New	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	BUROSUMAB-TWZA	CALCIFEDIOL
Manufacturer	Kyowa Kirin	Eirgen
Dosage forms	Injectable	Capsule, extended release
Drug class	—	Vitamin D3 Analog
Boxed warning	None	None
Treats	Familial Hypophosphatemic Rickets	Hypocalcemia, Hypoparathyroidism, Osteoporosis

crysvita rayaldee

Rating

New

Pharmacy pays

—

Type

Active ingredient

BUROSUMAB-TWZA

CALCIFEDIOL

Manufacturer

Kyowa Kirin

Eirgen

Dosage forms

Injectable

Capsule, extended release

Drug class

—

Vitamin D3 Analog

Boxed warning

None

Treats

Familial Hypophosphatemic Rickets

Hypocalcemia, Hypoparathyroidism, Osteoporosis

Frequently asked questions

What is the difference between Crysvita and Rayaldee?

Crysvita contains Burosumab-Twza, while Rayaldee contains Calcifediol — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.